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Sierpinski/Riesel Base 5 Project

The goal is to look for the lowest Sierpinski and Riesel numbers in base 5.
Here's a quote:

he lowest even Reisel number is mooted to be 346802 and the lowest even Sierpinski 159986. That is to say 346802.5^n-1 is always composite for every n, and 159986.5^n+1 is similarly endowed.

The Sierpinskis look the easiest to look at. We have to show there is a prime for every even k (in the power series k.5^n+1) less than k=159986 and I have checked so far up to n=18468 for all of the remaining values of k shown below. All other values of k have a prime at less than n=18468

Four more primes contest! Started!

We need to find four more primes to make this the best year in the project. To see the number of primes found by year, look at the Primes Reported paragraph of the Description post. This is also a good place to find out more about the project.